Terminal SCG Failure Location Reporting via RRC Flag
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the NR system, during dual connectivity, when a connection failure (SCG Failure) occurs, the 'SCGFailureInformation' message does not provide location information, making it impossible for the network to identify the area of failure.
Innovation Solution
A terminal is configured to detect communication failures with a secondary cell group and transmit a message including location information, which is included in the 'SCGFailureInformation' message if configured to do so by the base station, allowing the network to identify the failure location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the SCGFailureInformation message is transmitted without location information, then the message structure remains simple and transmission overhead is reduced, but the network cannot identify the area where the failure has occurred
Solution Approach 1:
The base station pre-configures the terminal with a flag parameter through RRC signaling before failure occurs. This flag indicates whether location information should be included in the SCGFailureInformation message. When the terminal detects a failure, it checks this pre-configured flag and includes location information only if the flag is set, thus preparing the message structure in advance based on network requirements.
2Measurement precision
If location information is always included in the SCGFailureInformation message, then the network can always identify failure areas, but the message size increases and transmission overhead increases
Solution Approach 1:
The inclusion of location information in the SCGFailureInformation message is made dynamic rather than static. The terminal dynamically adjusts the message content based on the pre-configured flag parameter received from the base station. When the flag indicates location reporting is needed, the terminal includes location information; otherwise, it omits this data, thus adapting the message size to actual network requirements.
3Reliability
If the terminal always reports location information, then the network quality management is improved, but the terminal's processing complexity and power consumption increase
Solution Approach 1:
The base station provides feedback to the terminal through the pre-configured flag parameter, indicating whether location information should be reported. The terminal receives this feedback and adjusts its reporting behavior accordingly. This feedback mechanism allows the network to control information reporting based on actual quality management needs, reducing unnecessary terminal processing when location information is not required.
Data Source
AI summary
A terminal includes a reception unit for receiving, from a base station that is a master node, a first message to configure communications with a master cell group and a secondary cell group, a communication unit for performing the communications with the master cell group and the secondary cell group configured that are based on the first message, a control unit for detecting an occurrence of a failure in communications with the secondary cell group, and a transmission unit for transmitting, when the control unit detects the occurrence of the failure in the communications with the secondary cell group, a second message including information indicating the occurrence of the failure in the secondary cell group, wherein the control unit includes location information in the second message when the first message is configured to have information indicating that the location information is to be included in the second message.